improve toBTC and fromBTC while ensuring safety.
improve toBTC and fromBTC while ensuring safety.

decentraland/bronzeage-node,VidaID/bcoin,decentraland/decentraland-node,VidaID/bcoin,decentraland/decentraland-node,decentraland/bronzeage-node,decentraland/bronzeage-node,VidaID/bcoin,decentraland/decentraland-node